Microsoft JScript runtime error: 'Telerik' is undefined

[newbie]

I am getting this error when I try to run my app:
Microsoft JScript runtime error: 'Telerik' is undefined

I don't remember seeing this error earlier. i closed my solution and when i opened it again and tried to run the app i started getting the error.
I am unable to understand where this error is coming from.

When i try to debug it gives me the error on this line(bold text):

 

<

script type="text/javascript">

 

 

 

//<![CDATA[

 

 

Sys.Application.initialize();

Sys.Application.add_init(

function() {

 

$create(Telerik.Web.UI.RadAjaxManager, {

"_updatePanels":"","ajaxSettings":[{InitControlID : "BtnLogin",UpdatedControls : [{ControlID:"BtnLogin",PanelID:"RadAjaxLoadingPanel1"},{ControlID:"errorLabel",PanelID:""}]}],"clientEvents":{OnRequestStart:"",OnResponseEnd:""},"defaultLoadingPanelID":"","enableAJAX":true,"enableHistory":false,"links":[],"styles":[],"uniqueID":"RadAjaxManager1","updatePanelsRenderMode":0}, null, null, $get("RadAjaxManager1"));

 

});

 

Please help!

[Sebastian]

Hi newbie,

There are several reasons for this error to appear and they are listed (along with the solutions) in these online resources:

http://www.telerik.com/help/aspnet-ajax/troubleshooting.html
http://www.telerik.com/support/kb/aspnet-ajax/general/error-telerik-is-undefined-when-using-outputcache-directive.aspx

I hope that the information from these sources will help you address the exception.

Best regards,
Sebastian
the Telerik team

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